zw_45

Did more test on this, the engine is occluded as it supposed to be, but the fuselage cannot be occluded whether I put it ahead or after the airliner wing.

Mainly from fuselage and engine. Any part with CoM ahead of the wing get occluded. Tried stock airliner wing and get similar results.

I’m using the updated model and the part database has been reset. The aero force is perfectly normal if I launch it independently.

Thanks a lot!Mind me to ask a question about aero force here? I suspend the x15 under the airliner wing to launch it. But the drag of fuselage and engine does not seem to be occluded (even if I decouple it from the mothership). My thought was that the airliner wing does not use drag model and anything behind the wing will not be occluded. But then I set “DragModelType” of the airliner wing to default, and the fuselage still generate enormous amount of drag. Do you have any idea on how this was calculated? Copy the entire text to a txt file and change the suffix to .cfg, then put the cfg file in GameData folder.

I didn’t test the new update.

@CobaltWolf, I found some weird thing about the drag force of x15 fuselage. At Mach 1.4 / 15000m, the total drag is 71kN, which might be too big for a plane of this size. Then I set “dragModelType = none” and “useInternalDragModel = True”, the total drag becomes 42kN at Mach 1.5 / 14000m. I think this would be more reasonable, and the final speed is Mach 4.2 / 22500m.

My temporary solution for the VentralFin is deleting ModuleParachute and ModuleDragModifier. @PART[bluedog_X15_VentralFin] { !MODULE[ModuleParachute] {} !MODULE[ModuleDragModifier],* {} MODULE { name = ModuleB9DisableTransform transform = canopy } }

Here’s my launch setup - the initial state is Mach 0.5 at 13000m, and the final state is Mach 2.5 at 17000m. The plane cannot continue to accelerate, although the TWR has exceed 3 at this moment. I guess this is due to excessive drag from lifting surfaces.

I’m wondering how big the cross section is compared with stock mk2 fuselage? Any chance to get a universal engine mount to fit other engines inside this airplane?

It has not been released yet, check this link https://github.com/rogerwang86/K5MilkyWay

@CobaltWolf I think the most suitable air launch platform for X15 would be C5M by RogerWang, but the wing does not have enough space to hang the rocket below, so I can only carry it on top of the fuselage like a space shuttle. I'm wondering if you can make a top mounted X15 decoupler to add some kitbash ability.

Here’s another thing I found about probe science - the Stanford antenna on Pioneer 6 and the dipole antenna on Alouette actually function as frequency sounder to study the electron density in ionosphere. It might be appropriate to add bd_ionelec experiment to those antennas. https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=1965-105A-04 https://nssdc.gsfc.nasa.gov/nmc/experiment/display.action?id=1962-049A-01

Some issues about the OGO satellite. According to this figure on NASA documentary, the experiment boom 2 and 3 on OGO should be UHF and VHF antenna. I checked the NSSDC webpage, the charged particle experiments (on boom 3 in game) was done on the forward experiment boom, and the probe does not have gravity experiment (on boom 4 in game) onboard. However, it has a trapped radiation experiment on one of the OPEP. https://nssdc.gsfc.nasa.gov/nmc/spacecraft/displayExperiment.action?spacecraftId=1966-049A

DELETED

Try to delete and reinstall the latest version of BDB, SOCK and all dependencies.